Portable calculator



FIG. 1 is a top, front and right perspective view of a portablecalculator showing my new design;

FIG. 2 is a top front and left perspective view thereof;

FIG. 3 is a top rear and left side perspective view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a rear elevational view thereof.

The ornamental design for a portable calculator, as shown and described.